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Pulse Oximeter
The fēnix device has a wrist-based pulse oximeter to gauge the
peripheral saturation of oxygen in your blood. Knowing your
oxygen saturation can help you determine how your body is
acclimating to high altitudes for alpine sport and expedition.
You can manually begin a pulse oximeter reading by viewing the
pulse oximeter widget (
Getting Pulse Oximeter Readings
). You can also turn on all-day readings (
All-Day Pulse Oximeter Readings
). When you remain
motionless, your device analyzes your oxygen saturation and
your elevation. The elevation profile helps indicate how your
pulse oximeter readings are changing, relative to your to
elevation.
On the device, your pulse oximeter reading appears as an
oxygen saturation percentage and color on the graph. On your
Garmin Connect account, you can view additional details about
your pulse oximeter readings, including trends over multiple
days.
For more information about pulse oximeter accuracy, go to
The oxygen saturation percentage scale.
A graph of your average oxygen saturation readings for the last 24
hours.
Your most recent oxygen saturation reading.
The elevation scale.
A graph of your elevation readings for the last 24 hours.
Getting Pulse Oximeter Readings
You can manually begin a pulse oximeter reading by viewing the
pulse oximeter widget. The widget displays your most recent
blood oxygen saturation percentage, a graph of your hourly
average readings for the last 24 hours, and a graph of your
elevation for the last 24 hours.
NOTE:
The first time you view the pulse oximeter widget, the
device must acquire satellite signals to determine your elevation.
You should go outside, and wait while the device locates
satellites.
1
While you are sitting or inactive, press
UP
or
DOWN
to view
the pulse oximeter widget.
2
Press to view widget details and begin a pulse oximeter
reading.
3
Remain motionless for up to 30 seconds.
NOTE:
If you are too active for the watch to get a pulse
oximeter reading, a message appears instead of a
percentage. You can check again after several minutes of
inactivity. For best results, hold the arm wearing the device at
heart level while the device reads your blood oxygen
saturation.
4
Press
DOWN
to view a graph of your pulse oximeter
readings for the last seven days.
Turning On All-Day Pulse Oximeter Readings
1
From the pulse oximeter widget, hold
MENU
.
2
Select
Options
>
Pulse Ox Mode
>
All Day
.
The device automatically analyzes your oxygen saturation
throughout the day, when you are not moving.
NOTE:
Turning on all-day acclimation mode decreases
battery life.
Turning Off Automatic Pulse Oximeter
Readings
1
From the pulse oximeter widget, hold
MENU
.
2
Select
Options
>
Pulse Ox Mode
>
Off
.
The device turns off automatic pulse oximeter readings. The
device begins a pulse oximeter reading when you view the
pulse oximeter widget.
Turning On Pulse Oximeter Sleep Tracking
You can set your device to continuously measure your blood
oxygen saturation while you sleep.
NOTE:
Unusual sleep positions can cause abnormally low
sleep-time SpO2 readings.
1
From the pulse oximeter widget, hold
MENU
.
2
Select
Options
>
Pulse Ox Mode
>
During Sleep
.
Tips for Erratic Pulse Oximeter Data
If the pulse oximeter data is erratic or does not appear, you can
try these tips.
• Remain motionless while the device reads your blood oxygen
saturation.
• Wear the device above your wrist bone. The device should
be snug but comfortable.
• Hold the arm wearing the device at heart level while the
device reads your blood oxygen saturation.
• Use a silicone band.
• Clean and dry your arm before putting on the device.
• Avoid wearing sunscreen, lotion, and insect repellent under
the device.
• Avoid scratching the optical sensor on the back of the device.
• Rinse the device with fresh water after each workout.
Training
Setting Up Your User Profile
You can update your gender, birth year, height, weight, heart
rate zone, and power zone settings. The device uses this
information to calculate accurate training data.
1
Hold
MENU
.
2
Select
User Profile
.
3
Select an option.
Fitness Goals
Knowing your heart rate zones can help you measure and
improve your fitness by understanding and applying these
principles.
• Your heart rate is a good measure of exercise intensity.
• Training in certain heart rate zones can help you improve
cardiovascular capacity and strength.
If you know your maximum heart rate, you can use the table
(
) to determine the best
heart rate zone for your fitness objectives.
If you do not know your maximum heart rate, use one of the
calculators available on the Internet. Some gyms and health
centers can provide a test that measures maximum heart rate.
The default maximum heart rate is 220 minus your age.
18
Pulse Oximeter
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